To dissuade Chrissy (Ashley Johnson) from the notion that adults party all night once she goes to sleep, Jason (Alan Thicke) allows her to stay up past her bedtime--on the very night that the Seavers' nouveau-riche neighbors throw a lavish (and boisterous) Halloween costume party. Elsewhere, Ben (Jeremy Miller) acts as "tour guide" for Luke (Leonardo DiCaprio) when the latter enters Dewey High School. Future Oscar winner Hilary Swank appears as Ben's snooty classmate Sasha Serotsky. ~ Hal Erickson, Rovi